0
Research Papers

Experimental Analysis of Overall Thermal Properties of Parabolic Trough Receivers

[+] Author and Article Information
Eckhard Lüpfert

German Aerospace Center (DLR), Institute of Technical Thermodynamics, Cologne 51170, Germanye.luepfert@dlr.de

Klaus-J. Riffelmann

 Flagsol GmbH, Cologne, Germany

Henry Price, Frank Burkholder

 National Renewable Energy Laboratory, Golden, CO 80401-3393

Tim Moss

 Sandia National Laboratories, Albuquerque, NM

J. Sol. Energy Eng 130(2), 021007 (Mar 10, 2008) (5 pages) doi:10.1115/1.2888756 History: Received September 21, 2006; Revised November 16, 2007; Published March 10, 2008

The heat loss of a receiver in a parabolic trough collector plays an important role in collector performance. A number of methods have been used to measure the thermal loss of a receiver tube depending on its operating temperature. This paper presents methods for measuring receiver heat losses including field measurements and laboratory setups both based on energy balances from the hot inside of the receiver tube to the ambient. Further approaches are presented to measure and analyze the temperature of the glass envelope of evacuated receivers and to model overall heat losses and emissivity coefficients of the receiver. Good agreement can be found between very different approaches and independent installations. For solar parabolic trough plants operating in the usual 390°C temperature range, the thermal loss is around 300Wm receiver length.

FIGURES IN THIS ARTICLE
<>
Copyright © 2008 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Example of temperature distribution

Grahic Jump Location
Figure 2

Test bench for thermal receiver loss testing at DLR and interior view

Grahic Jump Location
Figure 3

Design of a new receiver thermal loss test bench at NREL

Grahic Jump Location
Figure 4

EuroTrough collector and test loop at Plataforma Solar de Almería

Grahic Jump Location
Figure 5

Rotating platform test facility at Sandia, NM

Grahic Jump Location
Figure 6

Collected data sets from different tests for thermal losses of parabolic trough receivers

Grahic Jump Location
Figure 7

SEGS VI receiver survey results

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In